\(Zn+2HCl\rightarrow ZnCl_2+H_2\)
\(n_{Zn}=\dfrac{6,5}{65}=0,1\left(mol\right)\)
Xét theo tỉ lệ:
\(\dfrac{n_{Zn}}{1}=\dfrac{0,1}{1}\)
\(\dfrac{n_{HCl}}{2}=\dfrac{0,3}{2}\)
\(\Rightarrow\dfrac{n_{Zn}}{1}< \dfrac{n_{HCl}}{2}\)
Vậy HCl dư
Theo PTHH: \(n_{ZnCl_2}=n_{Zn}=0,1\left(mol\right)\)
Khối lượng muối clorua tạo thành là:
\(m_{ZnCl_2}=n_{ZnCl_2}.M_{ZnCl_2}=0,1.136=13,6\left(g\right)\)